Hi, just bought my first Subaru and this is also my first post. There's a small box with a **** which is connected to two vacum pipes and cable tied to the engine, my question is what is the point of this? I presume it doesn't increase the boost so why would you have something that limits it? Thanks

 

Put a pic up mate..... if it's a boost con it's a bonus as it would have been fitted to up the boost.....

 

Sounds like a dawes device

 

Just trying to sort out a pic now